A rigorous physical-mathematical model of heterogeneous conductive media is based on the effective-medium approach. A generalization of the classical effective-medium theory EMT consists of two major parts:

Different phenomenological approaches for Λ and Λ polarization in polarized semi-inclusive deep inelastic scattering and electron-positron annihilation at Z pole are considered. Current and future experiments will soon provide accurate enough data to study spin phenomena in these reactions and distinguish between various models. Talk given at the SPIN-97 VII Workshop on High Energy Spin Physics...

Low detection sensitivity stemming from the weak polarization of nuclear spins is a primary limitation of magnetic resonance spectroscopy and imaging. Methods have been developed to enhance nuclear spin polarization but they typically require high magnetic fields, cryogenic temperatures or sample transfer between magnets. Here we report bulk, room-temperature hyperpolarization of (13)C nuclear ...

Natural cytotoxicity is achieved by polarized release of perforin and granzymes at the NK cell-target cell immunological synapse. Signals for granule polarization and degranulation can be uncoupled in NK cells, which raises the question of their respective sensitivity to inhibitory receptors. Expression of either HLA-C or HLA-E on the human cell line 721.221 blocked granule polarization, degran...

We designed, built, and calibrated a new spectropolarimeter for the HiVIS spectrograph (R∼ 12000-49000) on the AEOS telescope. We also did a polarization calibration of the telescope and instrument. We will introduce the design and use of the spectropolarimeter as well as a new data reduction package we have developed, then discuss the polarization calibration of the spectropolarimeter and the ...

Intuitively, light impinging on a spatially mirror-symmetric object will be scattered equally into mirror-symmetric directions. This intuition can fail at the nanoscale if the polarization of the incoming light is properly tailored, as long as mirror symmetry is broken in the axes perpendicular to both the incident wave vector and the remaining mirror-symmetric direction. The unidirectional exc...

The effects of uniform steady state (DC) extracellular electric fields on neuronal excitability were characterized in rat hippocampal slices using field, intracellular and voltage-sensitive dye recordings. Small electric fields (</40/ mV mm(-1)), applied parallel to the somato-dendritic axis, induced polarization of CA1 pyramidal cells; the relationship between applied field and induced polariz...

We investigate the normal polarization induced by bending of graphite shells, which microscopically occurs because of a shift in sp hybridization at each atomic site. Based on a rehybridization model we analytically estimate the dependence on curvature of electronic charge spill into convex region. We further performed DFT calculations and extract the radial atomic dipole by direct electronic c...

Charge-induced spin polarization in small organic molecules is a key factor for spin transport and magnetic effects in related organic devices. In this work, we study spin polarization in charged thiophene oligomer molecules by calculating the magnetic moment with density functional theory. It is found that the emergence and variation of the net magnetic moment is related to both the amount of ...

The complete calculation of the CMB polarization observables (i.e. Eand B-modes) is reported within the conventional ΛCDM paradigm supplemented by a stochastic magnetic field. Intriguing perspectives for present and forthcoming CMB polarization experiments are outlined. Large-scale magnetism recently became an intriguing triple point where cosmology, astronomy and high-energy astrophysics meet ...